Hi Aemetz, Sorry for the long delay to answer you, but the forum subscription does not seem to work I have no experience with this kind of installation (Win2K + WinXP) If at installation time, C: is the system partition, I think that creating a empty file DRIVE.F on the partition where WinXP has to be installed will solve the issue, but I am not sure this will solve the problem. Perhaps creating DRIVE-.F on the system partition, so MapDrive will not assign the lettre F:, then during the boot, Windows will perhaps take the letter F (which was not assigned by MapDrive) to assign your WinXP partition (so aiigning F: instead of J:). Yes, but nor the system partition, nor the partition with the page file cannot be reassign. You can run MapDrive in a normal DOS box. Booting on Win2K, you should be able to change the letter of your WinXP partition to F:; this is maybe THE solution...I hope to have wel understood and correctly reply to your questions,; in the opposite, ask again Michel. ps: MapDrive should be integrated in nLite as an addon; see htp://www.german-nlite.de for further informations.